body {
    /* background: #f2f2f2; */
    background: #282c34;
}

.frame {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    margin-top: -200px;
    margin-left: -200px;
    border-radius: 2px;
    box-shadow: 1px 2px 10px 0px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    background: #1f91dd;
    color: #fff;
}

.form {
    position: absolute;
    width: 300px;
    height: 300px;
    top: 50px;
    left: 50px;
    /* background: #0003; */
}

.ellipse {
    box-sizing: border-box;
    position: absolute;
    top: 0;
    left: 105px;
    width: 90px;
    height: 300px;
    border: 1px solid #fff;
    border-radius: 50%;
    transition: all 0.5s ease-in-out;

    animation: ellipse 6s ease-in-out infinite;
    animation-delay: calc(var(--i) * -0.1s);
}

@keyframes ellipse {
    0%,
    20% {
        transform: rotate(0);
    }
    60% {
        transform: rotate(180deg) scaleX(3);
    }
    100% {
        transform: rotate(360deg);
    }
}
